LINQ to XML提取嵌套元素 [英] LINQ to XML extract nested elements

问题描述

我是LINQ和XML解析的新手，而是C#编程的新手.对于以下XML结构，我正在尝试提取嵌套元素:

I'm new to LINQ and XML parsing and rather new to C# programming. For the following XML structure, I'm trying to extract the nested elements:

  <persons>
    <person>
      <personNumber>2</personNumber>
      <info>free text</info>
      <addresses>
        <address>
          <city>XXX</city>
          <location>1</location>
        </address>
        <address>
          <city>YYY</city>
          <location>2</location>
        </address>
      </addresses>
    </person>
    <person>
      <personNumber>3</personNumber>
      <info>free text</info>
      <addresses>
        <address>
          <city>XXX</city>
          <location>1</location>
        </address>
        <address>
          <city>YYY</city>
          <location>2</location>
        </address>
      </addresses>
    </person>
  </persons>

我希望能够为personNumber = 2的所有人获取所有城市和位置！

I want to be able to fetch all the city and location for all persons with personNumber = 2!

推荐答案

您可以使用linq这样操作:

You can do it this way using linq:

var result = from p in xmlDoc.Descendants("person")
             from a in p.Descendants("address")
             where p.Element("personNumber").Value == "2" 
             select new 
                 { 
                   City = a.Element("city").Value, 
                   Location = a.Element("location").Value 
                 };

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